Unnamed (lode in lower Rock Creek)

The Unnamed (lode in lower Rock Creek) is a gold mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

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Site Name

Primary: Unnamed (lode in lower Rock Creek)

Commodity

Primary: Gold
Secondary: Tungsten
Secondary: Silver

Location

State: Alaska
District: Nome

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Model Name: Low-sulfide Au-quartz vein

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Albitization and silicification.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Arsenopyrite
Ore: Scheelite
Ore: Pyrite
Ore: Gold
Gangue: Quartz
Gangue: Albite

Comments

Comment (Deposit): Model Name = Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a).

Comment (Geology): Geologic Description = A massive quartz vein, as much as 4 feet wide, is exposed on the southeast side of Rock Creek about 600 feet upstream of the Snake River road (Hummel, 1962 [MF 247, locality 30]). Exposures on the south bank of Rock Creek between the quartz vein and the road locally also contain pyrite-arsenopyrite-bearing quartz veins (Hummel, 1962 [MF 247, locality 24]). These occurrences are separated from numerous other mineral deposits in the Rock Creek area by the Mount Brynteson fault. Hummel (1962 [MF 247]) mapped this nearly north-striking fault about one-half mile west of Mount Brynteson. The fault apparently continues southward to the Snake River flood plain. It also appears to have controlled the course of strongly linear Bergstrom Gulch. Hummel (1962 [MF 247]) reported the presence of gold and scheelite; arsenopyrite and pyrite are also present. Kennecott Exploration Company drilled two shallow reverse circulation holes in this area in 1994 or 1995 but found only low gold values.

Comment (Geology): Age = Mid-Cretaceous; veins cross cut regionally metamorphosed schist; see NM207.

Comment (Reference): Primary Reference = This report

Comment (Workings): Workings / Exploration = Quartz veins and sulfidized schist were explored by trenches and shallow shafts probably before 1920. Two prospects in the area between the Mount Brynetson fault and the Glacier Creek road were noted by Hummel (1962, localities 24 and 30). The area was soil sampled by BHP in 1989; it is within the extensive arsenic-gold anomaly that extends almost continuously from Glacier Creek to north of Lindblom Creek. Kennecott Exploration Company drilled two reconnaissance reverse circulation holes in this area in 1995 but found only low gold values.

Comment (Exploration): Status = Probably inactive

References

Reference (Deposit): Hummel, C.L., 1962, Preliminary geologic map of the Nome C-1 quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-247, 1 sheet, scale 1:63,360.

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